Method and Apparatus for Reporting Measurement Result

1. A method for reporting Minimization of Driving Tests (MDT) measurement results in a wireless communication system, performed by a user equipment (UE), the method comprising: receiving an MDT measurement configuration from a base station; entering a Radio Resource Control (RRC) idle mode; logging an MDT measurement result based on the MDT measurement configuration when the UE is in the RRC idle mode, the MDT measurement result including at least one log entry, the at least one log entry including a measured cell quality of a serving cell, a measured cell quality of a neighbor cell and privacy information of the UE; determining whether consent for reporting privacy information is revoked while in the RRC idle mode; when consent is revoked while in the RRC idle mode, stop logging the MDT measurement result; entering an RRC connected mode; transmitting to the base station, upon entering the RRC connected mode, a revocation indicator indicating whether or not consent is revoked, wherein the revocation indicator is transmitted using an RRC message; and receiving a release message in order to release the MDT measurement configuration when the revocation indicator indicates that consent is revoked, wherein the release message includes another measurement configuration including a logging duration which is set to zero such that the MDT measurement is not performed, wherein establishment of the RRC connection is not triggered as a result of consent revocation.

2. The method of claim 1 , wherein the privacy information includes location information of the UE at the moment of logging.

3. The method of claim 1 , wherein the measurement configuration includes a logging interval indicating a periodicity for measurement logging and a logging duration indicating a duration for which UE is requested to perform MDT measurement logging.

4. The method of claim 1 , further comprising: when the consent is revoked, discarding the MDT measurement configuration.

5. The method of claim 4 , further comprising: when the consent is revoked, discarding the MDT measurement result.

6. The method of claim 1 , wherein the MDT measurement result is logged while the UE is in a RRC idle mode.

7. The method of claim 1 , wherein the measurement configuration is used to configure the UE to perform Minimization of driving tests (MDT).

8. A user equipment (UE) for reporting Minimization of Driving Tests (MDT) measurement results in a wireless communication system, comprising: a radio frequency unit for receiving a radio signal; and a processor, operably coupled with the radio frequency unit, configured to: receive an MDT measurement configuration from a base station; enter a Radio Resource Control (RRC) idle mode; log an MDT measurement result based on the MDT measurement configuration, the MDT measurement result including at least one log entry, the at least one log entry including a measured cell quality of a serving cell, a measured cell quality of a neighbor cell and privacy information of the UE; determine whether consent for reporting privacy information is revoked while in the RRC idle mode; and when consent is revoked while in the RRC idle mode, stop logging the MDT measurement result, enter an RRC connected mode; transmit to the base station, upon entering the RRC connected mode, a revocation indicator indicating whether or not consent is revoked, wherein the revocation indicator is transmitted by using an RRC message; and receive a release message in order to release the MDT measurement configuration when the revocation indicator indicates that the consent is revoked, wherein the release message includes another measurement configuration including a logging duration which is set to zero such that the MDT measurement is not performed, wherein establishment of the RRC connection is not triggered as a result of consent revocation.

9. The UE of claim 8 , wherein the privacy information includes location information of the UE at the moment of logging.

10. The UE of claim 8 , wherein the MDT measurement configuration includes a logging interval indicating a periodicity for MDT measurement logging and a logging duration indicating a duration for which the UE is requested to perform MDT measurement logging.